<!DOCTYPE html>
<html>
	<head>
		<meta charset="UTF-8">
		<title></title>
		<script type="text/javascript">
			function goBack(){
				window.history.go(-1);
			}
		</script>
	</head>
	<body>
		<input type="button" name="goback" id="goback" value="返回" onclick="goBack();" />
	</body>
</html>
